I have been around many belted belted cartridges that worked till the primer pockets were loose, without ever using the Neil Jones die.
I can loosen a primer pocket with one firing. Correlation does not equal causation. Claiming the problem doesn't exist because you've not had it, presents a logical fallacy issue. Especially when those of us that have been instructors on firing lines in the industry for some period of time have been personally witnessing the issues for over a decade. Less so these days, due to the complete abandonment of belted magnums. (rightfully so)
Some people seem to think I'm sharing an opinion here. I'm not. I'm sharing a mechanical fact. It's a fact that a great many shooters have never encountered, for all kinds of reasons... but it is a fact none the less.
From the larry willis site:
Unlike non-belted cases, the belt prevents conventional full length dies from traveling far enough down the case. This limits the amount of resizing, and brass is plowed rearward. The brass builds up just above the belt at each reloading, and cases expand.
We can debate this all you like, but there's always a disconnect between those that haven't experienced something, and those that have. Those that haven't, will most often claim that the problem doesn't exist, no matter how factually and easily the problem can be explained or demonstrated. This is especially true if they are emotionally invested in the means, rather than the outcome. That emotional investment might be due to nostalgia or familiarity... but it's there none the less. Even I have a nostalgic feeling toward the 300 win mag.
The converse of that is the emotional
attachment to the outcome. In this discipline, that means down range performance and a systematic elimination of variables in every place we can eliminate them. So... advocating for both a primary and secondary headspace, when time has taught us that only one is required, and we don't need the belt to hold the pressure, is arguing for mediocrity. This is evidenced by the complete absence of all belted cases from any apex in every single shooting discipline, with perhaps the singular exception of dangerous game cartridges. A situation where pure accuracy and precision are secondary, and raw horsepower are primary. The reliability and other concerns are handled by adhering to the one bullet-one barrel philosophy. Having talked to PH's about the belted magnum web expansion problem in the past, several of them said it would be unconscionable for them to NOT use the willis collet die, and the others very matter of fact said they abhor handloaded ammunition due to the reliability issues they've experienced from a great number of hunters in the past.
Take great care to read what I'm saying and infer the correct message. I am not saying the belted magnums are worthless. Yet I am saying they are inferior to the modern options. In most instances, with most use cases, this is not an opinion. It is a fact. This does not mean everyone that has a belted mag should throw it away. Quite the contrary. If people are happy, then continue being happy.
...and here is the critical part:
Their happiness does NOT give them permission to advocate for an eclipsed technology and sink OTHER people's money into poorer choices when they are not already invested in it. Not without publicly stated resistance from me, at the very least.
Last month I put roughly 1000 handloaded purposeful precision rifle rounds downrange. That was the least I've shot in any month this year due to it being deer season and I hunted almost every day of it. It would be good for people to remember that when I'm talking, often times I'm not talking to them. I'm talking to those people that also expect apex level performances with a busy firing schedule that aren't wanting to compromise on any one thing.
This doesn't mean I begrudge anyone clinging to the past. I will begrudge them trying to push the past on others however.
Despite my love for the 300 win mag, and the fact that it will always have a place in my heart... The 300 PRC has relegated it to the dust bin of history. The world just hasn't caught up to that fact yet.
But it will.
A customers factory-ammo moose smasher:
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